Home · Heterodontidae · Galapagos bullhead shark
Galapagos bullhead shark (Heterodontus quoyi) — Heterodontidae

Galapagos bullhead shark

Heterodontus quoyi
NT · Near Threatened

The Galapagos bullhead shark (Heterodontus quoyi) is a saltwater fish of the family Heterodontidae that grows up to 107 cm.

Length
107 cm
Water
Saltwater
Depth
3.0–40.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Stone or rock
Danger
Can cause injury
Range
Eastern Pacific
Edibility
Not eaten

Want the complete picture on the Galapagos bullhead shark?

Get the app

Description

The Galapagos bullhead shark is a small bullhead shark from the eastern Pacific, around the Galapagos and off Peru. The species grows to about 107 cm and has a stocky, light-brown body with large dark blotches, a blunt head with heavy brow ridges and, before each of the two dorsal fins, a strong spine linked to a weak venom gland. As a nocturnal bottom-dweller it shelters by day in crevices of rocky reefs and at night crushes sea urchins, crabs and molluscs with flat rear teeth. It lays spiral egg capsules. The IUCN assesses the species as Near Threatened (NT).

Frequently asked questions

How do you recognise the Galapagos bullhead shark?

The Galapagos bullhead shark has an elongate, eel-like body, is mainly brown and shows a spots pattern. Heavy brow ridges and a spine with weak venom in front of each dorsal fin; nocturnal horn shark

Where does the Galapagos bullhead shark live?

The Galapagos bullhead shark lives in the sea (marine waters) and is mostly found around stony or rocky ground. Eastern Pacific

How big does the Galapagos bullhead shark get?

The Galapagos bullhead shark grows to a maximum of about 107 cm.

Is the Galapagos bullhead shark dangerous to humans?

The Galapagos bullhead shark can cause injury; handle it with care. Before each dorsal fin is a strong, weakly venomous spine; handle this shark with care. Clean any prick or puncture wound thoroughly, immerse in hot water (about 45 C) for pain, and seek medical help for infection.

Is the Galapagos bullhead shark edible?

The Galapagos bullhead shark is not usually eaten.

More photos

Galapagos bullhead shark (Heterodontus quoyi) — Heterodontidae — 2
iNaturalist ((c) Billy Bensted-Smith, some rights reserved (CC BY-NC))
Galapagos bullhead shark (Heterodontus quoyi) — Heterodontidae — 3
iNaturalist ((c) Billy Bensted-Smith, some rights reserved (CC BY-NC))
Galapagos bullhead shark (Heterodontus quoyi) — Heterodontidae — 4
iNaturalist ((c) Billy Bensted-Smith, some rights reserved (CC BY-NC))
Galapagos bullhead shark (Heterodontus quoyi) — Heterodontidae — 5
iNaturalist ((c) Billy Bensted-Smith, some rights reserved (CC BY-NC))
Fin

Want the complete picture on the Galapagos bullhead shark?

Point your camera at the fish and Fin names the species in seconds. Free, and the Galapagos bullhead shark is one of 12,519 species in the app.

Get the app →

All data

Identification

English name
Galapagos bullhead shark verified
Scientific name
Heterodontus quoyi
Family
Heterodontidae

Appearance

Size class
Extra large verified
Max length (cm)
107.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Pattern
Spots sourced
Tail shape
Crescent (lunate) inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
Two separate sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
3.0 verified
Max depth (m)
40.0 verified
Natural range
Eastern Pacific verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Sea urchins, crabs and molluscs inferred
Social behaviour
Solitary sourced
Territorial
No sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Nocturnal rock horn shark; present year-round. sourced
Special features
Heavy brow ridges and a spine with weak venom in front of each dorsal fin; nocturnal horn shark sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Fishing with natural bait (fish, shrimp, worm) or lures close to reef and rock structures. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Can cause injury sourced
First aid
Before each dorsal fin is a strong, weakly venomous spine; handle this shark with care. Clean any prick or puncture wound thoroughly, immerse in hot water (about 45 C) for pain, and seek medical help for infection. verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Heterodontus

More from the family Heterodontidae

Fin

Want the complete picture on the Galapagos bullhead shark?

Point your camera at the fish and Fin names the species in seconds. Free, and the Galapagos bullhead shark is one of 12,519 species in the app.

Get the app →
Is this the Galapagos bullhead shark? Get the app